Saw filing machine



July s, 1943. R. s. Ewns SAW FILING MACHINE Filed June 2, 1942 4 Sheets-Sheet -1 July 6, 1943- R. s. EwERs 2,323,527

SAW FILING MACHINE Filed June 2, 1942 4 Sheets-Sheet 2 Inventor Enzo S .E'zaens WWWMEI July fs,` 1943. n. s. EwERs 2,323,527

SAWA FILING MACHINE Filed June '2, 1942 4 Sheets-Sheet 3 Inventor lazo .st Zwerg July 6, 1943. R. s. EwERs sAw FILING MACHINE Filed June 2, 1942 4 Sheets-Sheet 4 Inventor Patented July 6, 1943 UNITED vSTATES PATENT GFFICE SAW FILING MACHINE Rolo "S, Ewers, Glendale, Ariz.

Application June 2, 1942, Serial No. 445,489

(Cl. 'i6-31) 3 Claims.

The present invention relates to new and useful improvements in saw filing machines, and has for its primary object to provide, in a manner as hereinafter set forth, a device of this .character comprising supporting means for a manually operable le oi a novel construction and arrangement whereby said le may be expeditiously and accurately adjusted to any desired position 'for meeting various conditions.

Another important object of the invention is to provide a saw filing machine of the aforementioned character comprising depth and width gauges of unique construction, whereby said gauges may be accurately adjusted and, when not in use, conveniently swung to an out-of-the-way position.

Other objects of the invention are to provide a saw ling machine of the character described which will be comparatively simple in construction, strong, durable, highly ercient and reliable in use, compact, and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a top plan View of a saw ling machine constructed in accordance with the present invention.

Figure 2 is a cross-sectional View, taken substantially on the line 2-2 of Figure l.

Figure 3 is a bottom plan View of the le supporting carriage,

Figure 4 is a cross-sectional View, taken substantially on the line of Figure 2.

Figure 5 is a cross-sectional view, taken substantially on the line 5 5 of Figure 2.

Figure 6 is a detail View in horizontal section, taken substantially on the line -E of Figure 2.

Figure '7 is -a detail view in horizontal section, taken substantially on the line l-l of Figure 2.

Figure 8 is a detail view in perspective of the. slidably mounted le supporting member.

Figure 9 is a view in longitudinal section through the upper portion of the device, taken substantially on 'the line S--S of Figure l.

Figure l0 is a view in iront elevation of the saw clamping means.

Figure 1l is a detail view in vertical section through the means for supporting one end o the file.

Figure 12 is a detail View in vertical section through a portion of the carriage.

Referring now to the drawings in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a supporting structure l of suitable metal. The supporting structure l includes a pair of angular brackets 2 comprising base members 3 which may be firmly secured in any suitable manner to a bench or other support. Inclined bars 4 are secured at an intermediate point, as at `5, on the upper portions of the brackets 2, which bars are capable of pivotal adjustment to any desired inclination. l

A saw clamp 6 is mounted on one end portion of thebarsfl. The clamp includes a pair of substantially U-shaped members 'l which are mounted for swinging adjustment on va lrod 3 which extends between the bars d. Mounted'on 'the rod is ya tube l) (see Fig. l) It will be observed that one end portion of the members l is mounted on `the rod v8 between the ends of the tube HJ and the inner sides of the bars 4. Nuts i l are threaded on-the end portions of the rod G for clamping 'the members l in adjusted position between the bars '4 and the tube H). tween these end portions of the members 'l stationary jaw l2.

At their other ends, the members 'l terminate in forwardly projecting hooks I3. Bolts Hi are mounted on these end Vportions of the members l. Levers l5 are pivotally yand removably mounted on the bolts I4, said levers `being operable in the hooks i3. Notches or slots l' in the levers I5 '(se'e Fig. 6) accommodate the pivot bolts I4. A swinging jaw Il is mounted on one end of the isa levers I5 for'coac'tion with the stationary jaw I?.

for clamping a saw I8 therebetween. Rubber blocks I9 are mounted inthe hooks I3 and engaged with the levers l5 in a manner to yieldingly `engage the jaw Il with the saw i8. Cam levers 20 are pivotally mounted, as at 2l, on the lower portions of the members 'l and engaged with the lower end portions of the levers l5 for positively moving the jaw I'l 'toward the stationary jaw l2 for clamping the saw I8 therebetween. Coil Vsprings 22 are connected to the lower portions of the leversl5`for maintaining said levers in enga-gement with the cam levers 2).

Fixed on the other end portions of the bars t is a tube 23 (see Figs. 2 and 9). A rod 24 extends through the tube 23 and terminates in threaded end portions which project beyond the ends of said tube. Mounted for swinging adjustment on the projecting end portions of the `rod 24 is a pair of arms 25. Nuts 28 are threaded on the Extending beend portions of the rod 24 for clamping the arms 25 in adjusted position against the ends of the tube 23. Extending between the free end portions of the arms 25 is a track 21 in the form of a metallic rod.

A file carriage 28 is operable on the track 21. The carriage 28 includes a platform 29 having mounted on its ends pairs of oppositely inclined rollers 3D which travel on the track 21. Depending from the platform 29 (see Figs. 2 and 3) is a hanger 3U having pivotally mounted thereon a shaft 3| which is adapted to extend transversely beneath the track 21. A flanged roller 32 is journaled on the shaft 3| and engaged beneath the track 21 for travel thereon. A coil spring 33 from the platform 29 is connected to the free end of the shaft 3| for engaging the roller 32 beneath the track 21. The elements t0 33, in?

clusive, constitute means for retaining the carriage 28 on the track 21.

Pivotally mounted at an intermediate point for swinging adjustment on the platform 29 is a frame 34. The frame 34 includes a pair of angle iron bars 35. A block or plate 36 on one end portion of the bars secures said bars together in spaced, parallel relation. As illustrated to advantage in Figure 12 of the drawings, a bar 31 extends between the bars 35 at an intermediatey point. A threaded pivot pin 38 is anchored in the bar 31 and extends downwardly therefrom through an opening which is provided therefor in the platform 29. A hand operated nut or the like 39 is threaded on the pin 38 and engaged beneath the platform 29 for frictionally securing the frame 34 in pivotally adjusted position on I said platform.

- Rising from the bars 35 at an intermediate point is a post 40. A substantially U-shaped slide 4| is mounted for reciprocation on the post 40 in parallelism with the bars 35, said slide including a comparatively long lower leg 42. Secured by a set screw 43 (see Fig. 4) on the free end portion of the leg 42 of the slide 4| is a bearing 44 comprising, in its lower portion, a substantially semi-circular, graduated recess 45. The

recess 45 accommodates a rotatably -adjustable bushing 46 (see Fig. 2) which is fixed on one end portion of a le 41 of triangular cross-section. This end portion of the le 41 includes a tang 48 on which a handle 49 is mounted. A marked disc 5|! is iixedly mounted between the handle 49 and the bushing 46 for coaction with the graduations on the bearing 44 to facilitate rotatably adjusting the file 41 to the desired position. A strap 5| has one end anchored to the bearing 44 and its other end detachably and adjustably connected to said bearing by means including a threaded shank 52 which passes through an apertured ear or lug 53 which is provided therefor on said bearing. A wing nut 54 is threaded on the shank 52. The strap 5| passes under the bushing 46 for clamping the le 41 in adjusted position. An angular bracket 55 (see Fig. 11) is secured by a set screw 5B at an intermediate point on the leg 42 of the slide 4| for supporting the other end of the file 41. Toward this end, the bracket 55 includes a socket 51 for the reception of the ile 41.

Mounted beneath the front portions of the bars 35 is a pair of depth gauges 58 which are engageable on the teeth of the saw I8, which saw, it will be noted, is secured in the clamping unit 6 in an inverted position. The depth gauges 58 include metallic bars 59 having upturned rear bars 35. Headed pins 6| are secured to the rear portions of the bars 59 and pass slidably through the bars 35. Coil springs 62 are engaged with the pins 6| for yieldingly urging the bars 59 upwardly or away from the saw |8. Adjusting screws `63 for the bars 59 are mounted vertically in the bars 35. The adjusting screws 63 are provided with reduced teats 64 on their lower ends which are engageable in openings provided therefor in the depth ygauge bars 59. This permits the bars 59 to be conveniently disconnected from the adjusting screws 63 and swung around to an outof-the-way position when the depth gauges 58 are not in use. Resilient clips 65 on the bars 35 friction-ally secure the adjusting screws `63 in adx justed position.

end portions 69 which are engaged beneath the 75 Pivotally mounted for swinging movement in a vertical plane on the post 40 and extending forwardly therefrom is an arm 66. Mounted on the free portion of the arm 66 and depending therefrom is a width gauge 61 which, as best seen in Figure 5 of the drawings, is engageable between the teeth of the inverted saw I8. A coil spring 68 is connected to the arm 66 for yieldingly engaging the gauge 61 with the saw.

A pair of brackets 69 are mounted on the bars 35 and project longitudinally from the forward ends thereof. The brackets 69 include, on their projecting end portions, upturned ears 10 in which transverse adjusting screws 1| for the gauge 61 are threadedly mounted. Referring again to Figure 5 of the drawings, it will be noted that the gauge 61 is engaged with the inner ends of the adjusting screws 1|. Resilient clips 12 on the brackets 69 frictionally secure the screws 1| in adjusted position. By removing one of the securing elements 13 (see Fig. 1) of each of the brackets 69, said brackets with the adjusting screws 1| thereon may be swung around to an out-of-the-way position on the bars 35 when the width gauge 61 is not being used. 'Ihis feature of the gauge devices permits a clear or substantially unobstructed view of the saw to be had. 4

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. Briefly, the saw I8 to be iiled is secured in position in the clamping unit 6 and the various adjustments are made to properly position the file 41 relative to the saw. The le 41 is then moved back and forth across a tooth of the saw, the slide 4| supporting said le during this operation. Every other tooth of the saw is filed, after which said saw is reversed in the clamping unit 6. The desired adjustments are again made and the operation is repeated. The saw |8 is removed from the clamping unit 5 by swinging the cam levers 20 upwardly.

It is believed that the many advantages of a saw ling machine constructed in accordance with the present linvention will be readily understood, and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and arrangement of parts may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. A saw filing machine of the character described comprising a supporting structure including a pair of bars pivotally mounted, at an intermediate point, for swinging adjustment in a vertical plane, means for mounting a saw to .be filed on one end of the bars, a track on the other ends of said bars, a carriage operable on said track, a slide operable on said carriage, and aY le mounted on said slide and engageable with the saw.

2. A saw filing machine of the character described comprising a supporting structure including a pair of bars pivotally mounted, at an intermediate point, for swinging adjustment in a vertical plane, a clamping unit on one end of the bars for receiving and securing a saw to be iiled, a track mounted for swinging adjustment on the other ends of the bars, a carriage operable on said track, a frame pivotally mounted for swinging adjustment on said carriage, a slide operable on said frame, and a iile mounted on said slide and engageable with the saw.

3. A saw filing machine of the character de- Cil scribed comprising a supporting structure, a clamping unit mounted on said supporting structure, said clamping unit including a pair of substantially U-shaped members secured to the supporting structure, a stationary jaw xed on one end of said members, a pair of levers pivotally mounted, at an intermediate point, on the other end portions of the members, a movable jaw on one end of said levers cooperable with the stationary jaw for receiving and securing therebetween a saw to be led, cam levers pivotally mounted on the members and operatively engaged with the other end portions of the levers for swinging the movable jaw toward closed position, and a le movably mounted on the supporting structure and engageable with the saw.

ROLO S. EWERS. 

